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2Â¥: Originally posted by bible2 at 2013-04-28 13:07:10
CaFe2O4µÄcifÎļþ

ÄãºÃ£¬ÎÒÏëÕÒµÄÊÇ£ºPDF Number:72-1199£»Space Groupnam£» a=9.23000,b=10.70500,c=3.02400.
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know_snow: ½ð±Ò+5, ¡ï¡ï¡ï¡ï¡ï×î¼Ñ´ð°¸, ·Ç³£¸Ðл£¡ 2013-05-03 09:10:23
*data for   ICSD #16695
Coll Code   16695
Rec  Date   1980/01/01
Mod  Date   2006/10/01
Chem Name   Calcium Diiron(III) Oxide
Structured  Ca (Fe2 O4)
Sum         Ca1 Fe2 O4
ANX         AB2X4
D(calc)     4.8
Title       The structure of calcium ferrite
Author(s)   Becker, D.F.;Kasper, J.S.
Reference   Acta Crystallographica (1,1948-23,1967)
            (1957), 10, 332-337
Unit Cell   9.230(12) 3.024(4) 10.705(1) 90. 90. 90.
Vol         298.79
Z           4
Space Group P n m a
SG Number   62
Cryst Sys   orthorhombic
Pearson     oP28
Wyckoff     c7
R Value     .14
Red Cell    P  3.024 9.23 10.705 89.999 89.999 90 298.793
Trans Red   0.000 1.000 0.000 / 1.000 0.000 0.000 / 0.000 0.000 -1.000
Comments    AE: Fe: O6; Ca: O8; O1-4: Fe3 Ca2
            Also CaV2O4- or BaSm2S4-type
            Standardized by Structure Tidy, was Pnam
            The structure has been assigned a PDF number (calculated
            powder diffraction data): 01-072-1199
            The structure has been assigned a PDF number (experimental
            powder diffraction data): 32-168
            New refinement based on previously measured intensities
            Structure type prototype : CaFe2O4
            Structure type : CaFe2O4
            X-ray diffraction from single crystal
            At least one temperature factor missing in the paper.
Atom  #   OX   SITE      x           y           z           SOF      H
Fe   1  +3    4 c   0.567       0.25        0.61           1.         0   
Fe   2  +3    4 c   0.08        0.25        0.392          1.         0   
Ca   1  +2    4 c   0.244       0.25        0.654          1.         0   
O    1  -2    4 c   0.292       0.25        0.338          1.         0   
O    2  -2    4 c   0.385       0.25        0.023          1.         0   
O    3  -2    4 c   0.479       0.25        0.784          1.         0   
O    4  -2    4 c   0.081       0.25        0.076          1.         0   
*end for    ICSD #16695
4Â¥2013-05-02 09:22:21
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